how can inputed value display on a textfield

[simon2x1]

i want an inputed value that a user enter into the textfield
should remain after clicking submit and an error message display
that invalued email.the email textfield will be blank why the other
textfield will still display the inputed value

[Markus]

The data will be available in the GET or POST array once the form has been submitted. Therefore, you can set the value of an input field to the data from your GET or POST array (if it exists).

<?php 
function get_value($key, $default = '') {
    if (isset($_POST[$key]) {
        return $_POST[$key];
    }
    return $default;
}
?>
<input type="text" name="my_input" value="<?php echo get_value('my_input', 'default text');?>" />
 

You could expand the helper function to include GET and COOKIE and SESSION if you liked. You could even use $_REQUEST.

[simon2x1]

i have try the code but is give me an error where my input field his also how can do the same for the other field i will appreciate if you made the adjustment on my code

 
<?php
if (isset($_POST['submit'])) {
 
$firstname = ($_POST['firstname']);
 $lastname = ($_POST['lastname']);
$email = ($_POST['email']);
 
function get_value($fname, $default = '') {
   if (isset($_POST[$fname])) {
         return $_POST[$fname];
     }
     return $default;
         }
 
mysql_query("INSERT INTO USER (firstname, lastname, email) VALUES
('" . $firstname . "', '" . $lastname . "', '" . $email . "')") or die(mysql_error());
 
<form  method="post" action="home.php">
<input type="text" name="firstname" value="<?php echo get_value('fname','firstname');?> />
<input type="text" name="lastname"  />
<input type="text" name="email"  />
<input type="submit" name="submit"  />
</form>
 

[simon2x1]

i have try the code but is give me an error where my input field his also how can do the same for the other field i will appreciate if you made the adjustment on my code

<?php
if (isset($_POST['submit'])) {
 
$firstname = ($_POST['firstname']);
 $lastname = ($_POST['lastname']);
$email = ($_POST['email']);
 
function get_value($fname, $default = '') {
   if (isset($_POST[$fname])) {
         return $_POST[$fname];
     }
     return $default;
         }
 
mysql_query("INSERT INTO USER (firstname, lastname, email) VALUES
('" . $firstname . "', '" . $lastname . "', '" . $email . "')") or die(mysql_error());
 
<form  method="post" action="home.php">
<input type="text" name="firstname" value="<?php echo get_value('fname','firstname');?> />
<input type="text" name="lastname"  />
<input type="text" name="email"  />
<input type="submit" name="submit"  />
</form>
 

[dlite922]

What does the error say? Usually Errors tell you what's wrong.




@simon2x1

[simon2x1]

sorry what i mean by error is that it do not work pls help me check my code and see what i do wrong

[hoopy]

It does not look like you are closing your IF statement and also have HTML embedded in the PHP which in turn has this embedded in it:

<?php echo get_value('fname','firstname');?> />

Simply saying "It doesnt work" does not help, give the errors which PHP has given to you.

Try this code which is a cleaned up version of your existing version:

<?
function get_value($fname, $default = '') {
  if (isset($_POST[$fname])) {
  return $_POST[$fname];
  }
  return $default;
}
 
if(isset($_POST['submit'])) 
{
  $firstname = $_POST['firstname'];
  $lastname = $_POST['lastname'];
  $email = $_POST['email'];
 
  mysql_query("
    INSERT INTO USER (firstname, lastname, email) VALUES
    ('" . $firstname . "', '" . $lastname . "', '" . $email . "')
  ") or die(mysql_error());
}
?>
 
<form  method="post" action="home.php">
<input type="text" name="firstname" value="<?php echo get_value('fname','firstname');?> />
<input type="text" name="lastname"  />
<input type="text" name="email"  />
<input type="submit" name="submit"  />
</form>